A brassiere, commonly known as a bra, is a form-fitting undergarment designed to support and shape the breasts. It typically consists of two cups, straps, and a band that wraps around the torso. Brassieres come in various styles, sizes, and materials to accommodate different body types and preferences. Brassieres serve multiple purposes, including providing comfort, enhancing appearance, and offering support during physical activities. They can be found in various designs, such as sports bras for exercise, push-up bras for added lift, and bralettes for a more relaxed fit.